<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			.style1{
				font-size: 50px;
				color: red;
			}
			.style2{
				color: red;
				text-decoration: underline;
			}
			.style3{
				text-decoration: underline;
				font-size: 50px;
			}
			.style4{
				color: red;
				text-decoration: underline;
				font-size: 50px;
			}
			p{
				text-decoration: underline;
			}
		</style>
	</head>
	<body>
		<p class="style1">段落1</p>
		<p class="style2">段落2</p>
		<p class="style3">段落3</p>
		<p class="style4">段落4</p>
	</body>
</html>
